Overall score includes:

Cooking performance (70%)
The cooking performance score is based on defrosting, cooking and reheating.

Ease of use (30%)
The ease of use score assesses ease of using controls, ease of cleaning, and visibility through the door during cooking.

Price is from a July 2019 survey.

Running costs ($/year) are evaluated on reheating a plated meal once a day (with electricity costs at 26¢/kWh).